Numéro
J. Phys. IV France
Volume 03, Numéro C4, Septembre 1993
4th International Workshop on Positron and Positronium Chemistry
Page(s) C4-61 - C4-67
DOI http://dx.doi.org/10.1051/jp4:1993406
4th International Workshop on Positron and Positronium Chemistry

J. Phys. IV France 03 (1993) C4-61-C4-67

DOI: 10.1051/jp4:1993406

Crossed beam measurement of binding energies of positronium compounds : a preliminary study

D.M. SCHRADER1, G. LARICCHIA2 and T.N. HORSKY3

1  Chemistry Department, Marquette University, Milwaukee, W1 53233, U.S.A.
2  Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.K.
3  Balzers High Vacuum Products, 8 Sagamore Park Road, Hudson, NH 03051, U.S.A.


Abstract
We describe an experimental method which will enable one to establish the chemical stability and measure the binding energies of compounds containing positronium atoms. The method consists of crossing a monoenergetic beam of very low energy (1 - 25 eV) positrons with a supersonic expansion molecular beam, and detecting a signature ion while measuring its kinetic energy. Except for the use of a positron beam instead of an electron beam, this is conventional MS/IKES (mass spectrometry/ion kinetic energy spectrometry), and the process involved is dissociative attachment.



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